发明名称 |
TWO-PHASE HASH VALUE MATCHING TECHNIQUE IN MESSAGE PROTECTION SYSTEMS |
摘要 |
The invention provides a two-phase hash value matching technique in message protection systems. This invention further improves the performance of message protection systems by avoiding computations associated with sophisticated signature hash value (SSHV) where possible. A message protection system that implements the two-phase hash value matching technique caches rough outline hash values (ROHVs) of previously scanned objects. The system can roughly distinguish one object from another using ROHVs. The system performs an initial check using ROHVs before performing the relatively time-consuming computations associated with SSHVs. |
申请公布号 |
WO2004114045(A2) |
申请公布日期 |
2004.12.29 |
申请号 |
WO2004IB01926 |
申请日期 |
2004.06.10 |
申请人 |
NOKIA INC;WANG BING;CARD JAMES;SMITH GREGORY J;SCOTT ROBERT PAXTON |
发明人 |
WANG BING;CARD JAMES;SMITH GREGORY J;SCOTT ROBERT PAXTON |
分类号 |
G06F;H04L9/00;H04L9/32 |
主分类号 |
G06F |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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